English · By MundoGood · October 4, 2026
AI-generated conceptual illustration of an autumn clock change; the scene does not represent a specific location or changeover time.
Daylight saving time ends on Sunday, November 1, 2026, in US locations that observe it. At 2 a.m. local time, clocks return to 1 a.m. The UK changes a week earlier: on Sunday, October 25, 2026, 2 a.m. becomes 1 a.m.
Start with the location attached to your appointment or device. A search result that says only “clocks go back” may be correct for a different country. The dates above are confirmed by NIST’s 2026 US guidance and GOV.UK’s clock-change calendar.
Where the US change applies
Most of the United States observes daylight saving time, but Hawaii and most of Arizona do not. The Navajo Nation observes it. NIST also lists American Samoa, Guam, Puerto Rico and the US Virgin Islands among places that do not observe DST.
For a trip or a remote appointment involving an exception, confirm the actual town or destination. A state name alone may not settle the question. “Mountain time” is especially easy to misread when one location changes seasonally and another remains on standard time. NIST’s location exceptions
In the UK, the October change ends British Summer Time and returns clocks to Greenwich Mean Time. GOV.UK also provides a downloadable calendar entry for its clock changes, useful if you want an official reminder alongside your household checklist. GOV.UK guidance
Watch the one-week US–UK scheduling gap
The different dates temporarily alter the time difference between participating US locations and the UK. For a concrete example, a 9 a.m. New York call corresponds to 2 p.m. London on October 23, 1 p.m. London on October 30 and 2 p.m. London again on November 6.
Those examples apply the published changeover dates to the two cities. They are a reason to inspect a recurring invitation rather than rely on a familiar offset.
Decide which location anchors the meeting. A weekly event intended to stay at 9 a.m. New York may shift on a London participant’s clock. An event intended to stay at 2 p.m. London may instead shift for New York. Check the specific occurrence, not just the first date in the series.
Give household clocks and timers a quick audit
Use this as a practical checklist for the relevant weekend:
- Check your phone and computer’s selected time zone and automatic-time settings
- Make a short list of manual clocks, including kitchen appliances, wall clocks and vehicle displays
- Inspect heating, lighting and other household schedules to see whether they follow local clock time or a fixed offset
- After the change, compare the displayed time and the next scheduled action before assuming everything updated
- For an important early departure, set the alarm after confirming the device’s local date and time
NIST explains that computers apply local time-zone and daylight-saving rules through their operating systems. Keeping the system updated matters; synchronization alone does not correct every configuration mistake. Device behavior varies, so follow the manufacturer’s instructions for a timer that does not adjust as expected. NIST on computer clock updates
Make overnight plans unambiguous
The repeated hour creates two occurrences of times such as 1:30 a.m. If an overnight booking, work shift or collection falls in that hour, ask the provider to identify the intended occurrence and time zone.
For travel, keep the carrier’s itinerary as the reference for each departure and arrival. Recheck the dated reservation rather than manually adding or subtracting an hour from a remembered schedule.
Check official rules before changing your plan
Proposals to alter daylight saving time can create confusing headlines. The US Department of Transportation currently says observing states must follow the federal changeover dates and cannot independently adopt permanent daylight saving time. This guide follows the official rules checked on October 4, rather than assuming a proposal has taken effect. US DOT’s current explanation
The simplest plan is to put your local change date on the calendar, audit important timers once and review cross-border appointments during the mismatch week.
By MundoGood · AI-assisted guide · Sources checked October 4, 2026